Check in codegen test expectations.

test/codegen/expect/language/string_escapes_test.js

Index: test/codegen/expect/language/string_escapes_test.js
diff --git a/test/codegen/expect/language/string_escapes_test.js b/test/codegen/expect/language/string_escapes_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..e0c28aa754dfeb20195390f3a5b302f8a040ba96
--- /dev/null
+++ b/test/codegen/expect/language/string_escapes_test.js
@@ -0,0 +1,80 @@
+dart_library.library('language/string_escapes_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__string_escapes_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const string_escapes_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  string_escapes_test.StringEscapesTest = class StringEscapesTest extends core.Object {
+    static testMain() {
+      string_escapes_test.StringEscapesTest.testDelimited();
+      string_escapes_test.StringEscapesTest.testFixed2();
+      string_escapes_test.StringEscapesTest.testFixed4();
+      string_escapes_test.StringEscapesTest.testEscapes();
+      string_escapes_test.StringEscapesTest.testLiteral();
+    }
+    static testDelimited() {
+      let str = "Foo
Bar
Baz퟿Boo";
+      expect$.Expect.equals(15, str[dartx.length]);
+      expect$.Expect.equals(1, str[dartx.codeUnitAt](3));
+      expect$.Expect.equals(1, str[dartx.codeUnitAt](7));
+      expect$.Expect.equals(55295, str[dartx.codeUnitAt](11));
+      expect$.Expect.equals('B'[dartx.codeUnitAt](0), str[dartx.codeUnitAt](12));
+    }
+    static testEscapes() {
+      let str = "Foo\fBar\vBaz\bBoo";
+      expect$.Expect.equals(15, str[dartx.length]);
+      expect$.Expect.equals(12, str[dartx.codeUnitAt](3));
+      expect$.Expect.equals('B'[dartx.codeUnitAt](0), str[dartx.codeUnitAt](4));
+      expect$.Expect.equals(11, str[dartx.codeUnitAt](7));
+      expect$.Expect.equals('z'[dartx.codeUnitAt](0), str[dartx.codeUnitAt](10));
+      expect$.Expect.equals(8, str[dartx.codeUnitAt](11));
+      expect$.Expect.equals('o'[dartx.codeUnitAt](0), str[dartx.codeUnitAt](14));
+      str = "Abc\rDef\nGhi\tJkl";
+      expect$.Expect.equals(15, str[dartx.length]);
+      expect$.Expect.equals(13, str[dartx.codeUnitAt](3));
+      expect$.Expect.equals('D'[dartx.codeUnitAt](0), str[dartx.codeUnitAt](4));
+      expect$.Expect.equals(10, str[dartx.codeUnitAt](7));
+      expect$.Expect.equals('G'[dartx.codeUnitAt](0), str[dartx.codeUnitAt](8));
+      expect$.Expect.equals(9, str[dartx.codeUnitAt](11));
+      expect$.Expect.equals('J'[dartx.codeUnitAt](0), str[dartx.codeUnitAt](12));
+    }
+    static testFixed2() {
+      let str = "FooÿBar";
+      expect$.Expect.equals(7, str[dartx.length]);
+      expect$.Expect.equals(255, str[dartx.codeUnitAt](3));
+      expect$.Expect.equals('B'[dartx.codeUnitAt](0), str[dartx.codeUnitAt](4));
+    }
+    static testFixed4() {
+      let str = "Foo
Bar";
+      expect$.Expect.equals(7, str[dartx.length]);
+      expect$.Expect.equals(1, str[dartx.codeUnitAt](3));
+      expect$.Expect.equals('B'[dartx.codeUnitAt](0), str[dartx.codeUnitAt](4));
+    }
+    static testLiteral() {
+      let str = "acdeghijkl${}\"";
+      expect$.Expect.equals('acdeghijkl${}"', str);
+    }
+  };
+  dart.setSignature(string_escapes_test.StringEscapesTest, {
+    statics: () => ({
+      testMain: dart.definiteFunctionType(dart.dynamic, []),
+      testDelimited: dart.definiteFunctionType(dart.dynamic, []),
+      testEscapes: dart.definiteFunctionType(dart.dynamic, []),
+      testFixed2: dart.definiteFunctionType(dart.dynamic, []),
+      testFixed4: dart.definiteFunctionType(dart.dynamic, []),
+      testLiteral: dart.definiteFunctionType(dart.dynamic, [])
+    }),
+    names: ['testMain', 'testDelimited', 'testEscapes', 'testFixed2', 'testFixed4', 'testLiteral']
+  });
+  string_escapes_test.main = function() {
+    string_escapes_test.StringEscapesTest.testMain();
+  };
+  dart.fn(string_escapes_test.main, VoidTodynamic());
+  // Exports:
+  exports.string_escapes_test = string_escapes_test;
+});